Radiator core



April 6 1926. 1,579,963 I l. SIMON RADIATOR CORE Filed Nov. 8, 1923 2 Sheets-Sheet l Patented Apr. 6, 1926.

UNITED, STATES `ramam'ron conn. l

Appncatien area November s, i923. serial No. s735045. Y

T 0 all whom it may concern:

Be itknown that I, ISADOREVSIMON, `a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented a Radiatory Core, 'of which the following is a specification.

One object of this-invention is to provide a yradiator core, W-hichfin addition to being simple in construction and inexpensive to make, shall be highly elcient as a heatexchanging device.

Another object of lmy invention is to provide a radiator core made. ofY suitably connected sections comprising ,corrugated lengths of metallic ribbon or other thin sheet material so formed as to produce a series of parallel air passages of equiflateral triangular cross section, Vand narrow Water passages madeup of alternating 'horizontal and inclincd portions.

I also desire to provide'a radiator core which shall include sheet metal lengthsy or strips of which certain-.are connected to form Water and air passages and others of the same outline are arranged as spacerswhich lcooperate With the'other strips to kprovide air passages of triangular cross section.

These objects and other advantageous ends, I attain as hereinafter set forth', reference being had to the accompanying drawings, in which, y Y t Fig. lis a iront elevation 2of a portion of a radiator core constructed 'in accordance with my invention; y,

t Fig. 2 is a plan of the structure shown in Fig. l; Y i

Fig. V3 is al erspective view of'avporton of one of the s `eet metalV strips oflwhich my radiator core is builtnp;

v Fig. 4 is a :trout elevation of one of ther sections of which the core iscomposed;

Fig. 5 is a front elevation of -a portion of my radiator Vshowing the spacer Astripsin position therein;

Fig. 6 is anenlarged vtransverse vertical section of a portion 'of my radiatorcore taken on line 6-6 Fig. 2; and, t i

Y Fig. 7 is a modifie tion of my 4invent-ion shovvingv its spacer strips made with heat ,radiating tongues. v

In carrying out my invention, I employ a suitable number `of elongated metallic ribkbons or thin strips of Isheet metal such as copper or brass, and by means of suitable rotaryor reciprocating dies corrugate these strips so that theyvare serra-ted or zig-Zag lpart 2a.

in cross section as illustrated in Fig.,r3. y

Each serrationfor corrugation consists primarily of tvvo parts 1 and 2 bent to `lie in planesdelining an angle of ,kivith the part 2 substantially double the q:vidth of that ofthe k'part 1. Thus each strip com- IPATiJavTk oFr1CE prises a regularly arranged series or' alternately arranged4 sectionsat yang-les or' 60 to each other. VVhile the 'tvvo longitudinal margins or edge portions, of each part 1` and 2 of the strip arefpreferably iiat as yindicated at 3-i-4-,7 thebody or main portions of the strip intermediatesaid marginal portions are oiiset or depressed away from the planes of said and 6.

parts 2i-4, as indicated -at 5V IVhile the lines defining they junctions of the plane parts 3 or 4 with its adjacent plane portions are straight and Well detined,` the port-ions 5 and 6 are gently merged or curved Afrom one to the other, as indicated at 7y and Y8 in Fig. 6, which illustrates a vertical crossk section of one of the sections taken through 'its offset portion. TWO strips areassociated together to vtorni a 'unit structure having a series of rhomboidalcells. Preferably these two strips are :tormedintegrally and when they are so formed a single long strip, corrugated as above described, is bent yat yits middle "portion through an anglev of 180o and its two free ends are connected, say by sea-ming orsoldering, as indicated at 9 in Figs. 4 and 5 to vform one Vunitofmy radiaor. Iy henintroduce between the twoivertically elongated and substantially parallel sides of the section, a spacer-orl filler strip n y made up of corrugations each having portions l and 2a at an angle of 60`to each other `and like the main strip of Which the completed section is forme'd,having the part l approximately one-,halt the Width of the In addition, said spacer strip yhas end portionslb parallel to the portions 2 and having the Width of the portions '1a. This spacer strip is preferably formed by the samev dies or rolls as those `forming the strip lf2, with Which, if desired,A it may be identical in form. rItWill be noted that the iiller strip is inverted or reversed with respect to the main strips of the unit.

corrugations of adjacent units. Under these conditions, the flat or plane portions 3-4 of any one unit lie in engagement and parallel with the similar fiat portions of the twov units on either sideof it, to which they are sweated or soldered by dipping in a 'bath of molten solder so that said units are centinuously connected to each other along their longitudinal margins. The adjacent strips of each two adjacent units constitute a pair of strips similarly positioned and identical in form.

Owing to the fact, that the portions 5 and 6 of the strips constituting each pair are ofi'- set or depressed, as above described and as shown in Figs. 1, 5 and 6, there is formed betweeneach pair a zig-zag water passage l0 of substantially uniform width from the top to the bottom of the core formed by the connected strips. Each of these passages is made up of relatively short horizontal portions and portions inclined at an angle of 60 to the horizontal, of substantially twice the length of said first portions and each passage opens respectively at the top and the bottom. The spacer strips la--Qa of the above soldering operation, are rigidly connected by the solder to the sections between which they are mounted and cooperate with the walls of said sections to form air passages extending alternately transversely and in inclined lines through the radiator core.

The core thus formed possesses the advantage that its 'water channels are substantially uniform iiiA cross section from top to .bottom and by Vreason ofthe fact that they are made up of alternating horizontal and inclined portions, they retard the flow 4 of water through them to an extent sufficient to permit the conduction of the heat from the water to the metal walls of the radiator core in the most rapid and efiicient manne-r. Thesel walls with the intermediate spacer strips, provide a relatively extended surface for transferring the heat of the water to the air flowing through the triangular air passages. Obviously the construction described is relatively inexpensive to make and assemble, especially in view of the fact that the spacer strips may be of the same corrugated form and may be made, if 'desired, though not necessarily, by the same ,dies as those employed in making the main portions of the sections.

If desired, the spacers may have their heat radiating surfaces materially increased Y by forming them with laterally projecting tongues, vanes or fins, such as those illustratedat 2b in Fig. 7. These vanes assist 1n breaking up the air currents flowing through the air passages.

I claim:

l. A radiator core comprising a plurality of pairs of closely adjacent metallic strips similarly positioned and identical in form, each strip consisting of a regular repetitive strips of the other pairs,

the respective pairs,

series of alternately arranged sections at angles of 60 to each other with alternate sections of each strip approximately onehalf as long as the others, the last said sections of successive pairs of strips being closely adjacent and in alignment with each other whereby rhomboidal cells are formed betweenl adjacent pairs.

2. A radiator core comprising a plurality of pairs of closely adjacent metallic strips similarly positioned and identical in form, each strip consisting of a regular repetitive series ofalternately arranged sections at angles of 60o to each other with alternate sections of each strip approximately onehalf as long as the others, the last said sections of successive pairs of strips being closely adjacent and in alignment with each other whereby rhomboidal cells are formed between adjacent pairs, and means located in the several rhombodial cells for dividing each of them into smaller cells.

3. A radiator core comprising a plurality of pairs of closely adjacent metallic strips similarly positioned and identical in form, ii

angles of 600 to each otherV with alternate sections of each strip approximately onehalf as long as the others, the last said sections of successive pairs of strips being closely adjacent and in alignment with each other whereby rhomboidal cells are formed between adjacent pairs, and means located in the several rhomboidal cells for dividing each of them into four triangular cells.

4. A radiator core comprising in combination a plurality of pairs of closely adjacent metallic strips similarly positioned and identical in form, each strip consisting of a regular repetitive series of alternately arranged sections at angles of 60 to each other and each alternate section of each strip rbeing in alignment with the corresponding sections of the corresponding whereby rhom-A boidal cells are formed between adjacent pairs, and other strips identical in conformation with the strips of the said pairs and located in inverted positions between whereby each rhomboidal cell is divided into four equilateral triangular cells. l

5. A radiator core made of a series of sections each consisting of a length of sheet metal bent to form a series of rhomboidal cells, the marginal portions of the sections being connected and their main portions be- Aing offset to formwater passages between Pff) Y pairs of adjacent-sections;

' cells, the marginal 6. A radiator core made of a series of sections each consisting of a length of sheet metal bent to form a lseries of rhomboidal portions of the sections being connected and their main portions being offset to form water pass es between wit a corrugated spacer strip in each section dividing the rhomboidal cells into cellsof triangular section, said water passages each being made up of horizontally extending portions alternated with portions at an angle of 60 to said horizontal portion, the inclined walls of the corrugated strips having tongues bent out to increase the heat radiating surface. l

7. A unit'structure for a radiator core, comprising two metallic strips similarly positioned and identical inform, eachstrip consisting of a regular repetitive series of alternately arranged sections at angles of 60o to eachother with alternate sections of each strip approximately as long at the others, whereby rhomboidal cells are formed between the two strips, and the last said alternate sections of the one strip respectively being slightly out of alignment with the corresponding sections of the other strip.

8. A unit structure for a radiator core, comprising two metallic strips similarly positioned and identical in form, each strip consisting of aregular repetitive series of alternately arranged sections at angles of 60 to each other with alternate sections of l each strip approximately as long as the others, whereby rhomboidal cells are formed between the two strips, and the last said i alternate sections of the one strip respectively being slightly out of alignment with the corresponding sections of the other strip, and means located in the several rhomboidal cells for dividing each of them into smaller ce ls. l r

9. A unit structure or a radiator core, comprising `two metallic strips similarly positioned and identical in form, each strip consisting of a regular repetitive series of alternately arranged sections at angles of 600 to each other with alternate sections of each strip approximately as long as the others, whereby rhomboidal cells are `formed betweenk the two strips, and the last said alternate sections of the one strip respectively being slightly out of alignment with the corresponding sections of the other strip, and a third strip identical in conformation with the first said strips and 'located in in `verted position between them whereby each rhomboidal cell is divided into yfour equilateral triangular cells.

isADoRE SIMON. 

